18998868

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 52348800

約数和(自身を除く): 33349932

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 79, 84, 98, 147, 158, 196, 237, 294, 316, 409, 474, 553, 588, 818, 948, 1106, 1227, 1636, 1659, 2212, 2454, 2863, 3318, 3871, 4908, 5726, 6636, 7742, 8589, 11452, 11613, 15484, 17178, 20041, 23226, 32311, 34356, 40082, 46452, 60123, 64622, 80164, 96933, 120246, 129244, 193866, 226177, 240492, 387732, 452354, 678531, 904708, 1357062, 1583239, 2714124, 3166478, 4749717, 6332956, 9499434, 18998868]

約数ペア:

[(1, 18998868), (2, 9499434), (3, 6332956), (4, 4749717), (6, 3166478), (7, 2714124), (12, 1583239), (14, 1357062), (21, 904708), (28, 678531), (42, 452354), (49, 387732), (79, 240492), (84, 226177), (98, 193866), (147, 129244), (158, 120246), (196, 96933), (237, 80164), (294, 64622), (316, 60123), (409, 46452), (474, 40082), (553, 34356), (588, 32311), (818, 23226), (948, 20041), (1106, 17178), (1227, 15484), (1636, 11613), (1659, 11452), (2212, 8589), (2454, 7742), (2863, 6636), (3318, 5726), (3871, 4908)]